There is absolutely no chance that asteroid 2012 DA14 will hit Earth when it makes its closest approach on Friday (Feb. 15), but many other asteroids like it have made a crash landing on the planet in the past.

Thursday February 14, 2013, 10:29 pm
Well, Natasha, an asteroid eliminating huge swaths of world populations wouldn't be such a bad thing from a certain point of view. Since that's not going to happen, why not just let loose with Mutually Assured Destruction (MAD)? It would be much more precise, too.

Friday February 15, 2013, 5:13 am
Russia’s Urals region has been rocked by a meteorite explosion in the stratosphere. The impact wave damaged several buildings, and blew out thousands of windows amid frigid winter weather. Hundreds are seeking medical attention for minor injuries.